#!/usr/bin/env python
"""
Code illustration: 3.02
Drum Program Editor Code
Setting up Widgets


@Tkinter GUI Application Development Hotshot
""" 

from Tkinter import *


#constants
MAX_DRUM_NUM = 5

class DrumMachine():

    def create_play_bar(self):
        playbar_frame = Frame(self.root, height=15)
        ln = MAX_DRUM_NUM+10
        playbar_frame.grid(row=ln, columnspan=13,sticky=W+E,padx=15, pady=10)
        button = Button( playbar_frame, text ='Play')
        button.grid(row= ln, column=1, padx=1)
        button = Button( playbar_frame, text ='Stop')
        button.grid(row= ln, column=3,padx=1)
        loop = BooleanVar()
        loopbutton = Checkbutton(playbar_frame, text='Loop', variable=loop)
        loopbutton.grid(row=ln, column=16,padx=1)
       
        
    def create_left_pad(self):
        left_frame = Frame(self.root)
        left_frame.grid(row=10, column=0, columnspan=6,sticky=W+E+N+S)
        tbicon = PhotoImage(file='images/openfile.gif')
        for i in range(0, MAX_DRUM_NUM):
            button = Button(left_frame, image=tbicon)
            button.image = tbicon
            button.grid(row=i, column=0,  padx=5,pady=2)
            self.drum_entry = Entry(left_frame)
            self.drum_entry.grid(row=i, column=4, padx=7,pady=2)
            


    def create_right_pad(self):
        right_frame = Frame(self.root)
        right_frame.grid(row=10, column=6,sticky=W+E+N+S, padx=15, pady=2)
        self.button = [[0 for x in range(4)] for x in range(MAX_DRUM_NUM)]
        for i in range(MAX_DRUM_NUM):
            for j in range(4):
                self.button[i][j] = Button(right_frame, bg='grey55')
                self.button[i][j].grid(row=i, column=j)

    def create_top_bar(self):
        '''creating top buttons'''
        topbar_frame = Frame(self.root)
        topbar_frame.config(height=25)
        topbar_frame.grid(row=0, columnspan=12, rowspan=10, padx=5, pady=5)

        Label(topbar_frame, text='Units:').grid(row=0, column=4)
        self.units = IntVar()
        self.units.set(4)
        self.units_widget = Spinbox(topbar_frame, from_=1, to=8, width=5, textvariable=self.units)
        self.units_widget.grid(row=0, column=5)
        
        

        Label(topbar_frame, text='BPUs:').grid(row=0, column=6)
        self.bpu = IntVar()
        self.bpu.set(4)
        self.bpu_widget = Spinbox(topbar_frame, from_=1, to=10, width=5, textvariable=self.bpu)
        self.bpu_widget.grid(row=0, column=7)
        
        
        


    def app(self):
        self.root = Tk()
        self.root.title('Drum Beast')
        self.create_top_bar()
        self.create_left_pad()
        self.create_right_pad()
        self.create_play_bar()
        self.root.mainloop()
        

# ======================================================================
if __name__ == '__main__':
    
    dm = DrumMachine()
    dm.app()